Horrible smell in kitchen
Please help. I live on the third floor of a house. We have a horrible smell in the kitchen. It comes and goes. It seems to be at its worst when it is damp, humid or if it rains. I have no idea where it is coming from. Sometimes it is so bad, you can't even stay in the room. We don't have a garbage disposal, yet is smells like sewage or garbage. It is a very old house. (1927). The couple on the second floor have it as well. And it sometimes smells in the hallways between floors. The landlord thinks it is a rodent decaying. But it has been 3 months already. We have poured bleach, baking soda down the drains. We have used candles, and bought a variety of sprays and smelling deodorizers but nothing takes away the smell.
Any ideas or suggestions?